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International Comfort Products T9MPV100J20B1 Furnace Door Switch
The furnace door switch is a safety switch which prevents the fan and burner from activating so as to avoid injuries. Do not try to fix it, just have it substituted for a new part promptly if it is causing you problems.
Some clues of an inadequate furnace door switch
- The whole system will not engage with the door closed
- The door switch looks breaking off
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